Weekly sales of the Xbox 360 grew by 30.9% to 252,000 systems per week, up from 192,500 in November. In November the PlayStation 3 sold 116,500 systems per week, growing to 159,500 systems per week in December, an increase of 36.7%. The Nintendo Wii grew by 10%, increasing from 245,250 to 270,000 systems per week. The only established current generation system last holiday, the Xbox 360, grew by 77% from November 2006 to December 2006.








